Subtract 45/60 from 15/84
15/84 - 45/60 is -4/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
45/60 = 45 × 7/60 × 7 = 315/420 - Subtract the two like fractions:
75/420 - 315/420 = 75 - 315/420 = -240/420 - After reducing the fraction, the answer is -4/7
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